compound assignment operator

[Vasileios Zografos]

Can someone please tell me what this assignment does?


iType |= EB_YMIN_ZMAX;

 

[Victor Bazarov]

Can someone please tell me what this assignment does?


iType |= EB_YMIN_ZMAX;

The same as

iType = iType | EB_YMIN_ZMAX;

with the exception that 'iType' is only evaluated once.

Victor

 

[Vasileios Zografos]

The same as

iType = iType | EB_YMIN_ZMAX;

with the exception that 'iType' is only evaluated once.

Victor

Trying not to sound too ignorant....
what does | do?

 

[Victor Bazarov]

Trying not to sound too ignorant....
what does | do?

It's what is known as "bitwise OR". Every pair of corresponding
bits in the operands is 'or'ed to produce the corresponding bit
in the result. Example:

010100101001110101 | 000100010101101001 => 010100111101111101

Victor

 

[Thomas Matthews]

Trying not to sound too ignorant....
what does | do?

Bitwise OR:

A B A OR B
--- --- ------
0 0 0
0 1 1
1 0 1
1 1 1

The bitwise-OR operator is often used to "set" bits.

--
Thomas Matthews

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